Window



Oct. 30, 1956 R. A. GlLLEsPlE /2768716 wINDow Filed Jan; 13, 1956 United States Patent O WINDGW Russell A. Gillespie, Indianapolis, Ind., assigner of onethird to Carl F. Spickeimier, oneuthird to Edith S. Greer, and one-third to Betty S. Spicitiemre, ati ci Indianapolis, Ind.

Application January 13, 1956, Seriali No. 559,636

3 Claims. (Cl. 189--72) This invention relates to a window, particularly a metal window, having a vertically slidable sash, and is concerned with providing an escape path for condensation collecting on the window sash.

ln carrying out my invention, l provide on the inner face of the lower rail of the sash, an extended lifting flange which cooperates with such rail to provide a condensationcollecting trough extending substantially for the full width of the window. At intervals along its length, the sashrail is provided with openings which permit the collected condensate to escape onto the sill for ow outwardly of the wall in which the window is located.

A more detailed description of my invention follows, reference being had to the accompanying drawing, in which:

Fig. 1 is a vertical section through a window embodying my invention;

Fig. 2 is a fragmental horizontal section taken on the line 2-2 of Fig. 1; and

Fig. 3 is a fragmental elevation taken on the line 3-3 of Fig. 1.

The window shown in the drawing is of the double-hung type and comprises a metal frame supporting for vertical sliding movement a metal-framed sash 11 which includes a lower sash-rail of extruded stock providing an outer flange 12, an inner flange 13, and a web 14. Above the web, the stock is formed to provide grooves for the reception of the pane and a sealing strip 15. The anges 12 and 13 project downwardly below the web 14; and near its lower edge, the inner flange 13 is joined by a lifting iiange 16 which projects upwardly and inwardly of the window to terminate preferably in a down-turned lip 18. Desirably, the lifting flange 16 extends substan-V tially for the full width of the window opening, its ends terminating close to the vertical members or side jambs of the frame 10, as will be clear from Fig. 2. The anges 13 and 16 thus dene a trough which extends for substantially the full exposed width of the sash 11 and serves to collect moisture which condenses on the inner face of the sash and runs downwardly thereon.

To permit the escape of condensation Icollecting in the trough above mentioned, the liange 13 is provided immediately above the flange 16 with a series of spaced holes 20 through which the liquid flows to the front side of the ange 13 and drops therefrom on to the downwardly and outwardly sloping top face of the sill member 22 of the frame 10. Desirably, the outer flange 12 of the lower sash-rail projects downwardly below the lower edge of the inner flange 13 where it is provided along its inner face with a bead 24 engageable with the outer face of a rib 26 which extends longitudinally on the sill 22. From a point intermediate the lateral extent of the lifting flange 16 such flange is joined by a longitudinally coextensive flange 28 the lower portion of which projects downwardly over the inner face of a flange 3i) on the sill. Engagement of the bead 24 with the rib 26 and of the two flanges 28 and provides a weather seal across the bottom of the sash 11.

As above noted, moisture condensed on the inner face of the sash 11 runs downwardly thereon under the influence of gravity into the trough defined by the flanges 13 and 16 and then escapes from such trough through the openings 29. The liquid then drops on to the sloping upper surface of the sill 22 behind the rib 26, which is provided at its base with spaced openings 32 to permit the liquid to flow outwardly to the outer edge of the sill. Engagement of the lower edge of the flange 12 with the sill will ordinarily not be tight enough to interfere with escape et' passing thi ugh the openings 32, but if it should be that tight, the liquid can escape around the ends of the flange 12.

l' claim as my invention:

1. In a window structure having a sill and a sash vertically slidable into and out of window-closing association with said sill, said sash having a lower rail formed of metal and comprising a vertically extending inner ange, a lifting flange extending obliquely upward therefrom on the inner side of the sash and cooperating therewith to provide an elongated trough extending along substantially the full width of the window, said inner ange being provided at spaced intervals along its length with openings permitting condensate collected in said trough to escape through said ange onto the associated window sill outwardly of the ange.

2. The invention of Iclairn 1 with the addition that the upper surface of said sill slopes downwardly and outwardly of the window and is provided with a longitudinal rib located outwardly beyond said inner sash-flange, said rib being provided with spaced openings for the escape of liquid.

3. In a window structure having a sill and a sash vertically slidable into and out of window-closing association with said sill, said sash having a lower rail formed of metal and comprising a vertically extending inner iiange, a second flange integral with said inner flange, said second flange having an intermediate portion extending obliquely upward and inward and a marginal portion disposed in a vertical plane spaced inwardly from said inner iiange, said sill having at its inner edge an upwardly projecting longitudinal ange the inner face of which is overlapped by said marginal flange-portion, said intermediate flange portion cooperating with said inner ange to define a trough extending for substantially the full width of the window, and said inner ange being provided with an opening permitting condensed moisture collecting in such trough to escape through the inner ange onto said sill.

References Cited in the tile of this patent UNITED STATES PATENTS 1,247,637 Campbell Nov. 27, 1917 

